Simple SMS REST API gateway for sending SMS from gammu supported devices. Gammu supports standard AT commands, which are using most of USB GSM modems.
When you run this application, you can simply send SMS using REST API:
POST http://xxx.xxx.xxx.xxx:5000/sms
Content-Type: application/json
Authorization: Basic admin password
{
"text": "Hello, how are you?",
"number": "+420xxxxxxxxx"
}
or you can simply get the current signal strength:
GET http://xxx.xxx.xxx.xxx:5000/signal
and the response:
{
"SignalStrength": -83,
"SignalPercent": 45,
"BitErrorRate": -1
}
There are two options how to run this REST API SMS Gateway:
- Standalone installation
- Running in Docker
Either you are using Docker or standalone installation, your GSM modem must be visible in the system. When you put a USB stick to your system, you have to see a new USB device:
dmesg | grep ttyUSB
or typing command:
lsusb
...
Bus 001 Device 009: ID 12d1:1406 Huawei Technologies Co., Ltd. E1750
...
If only cdrom device appeared, install usb-modeswitch to see a modem as well:
apt-get install usb-modeswitch
This guide does not cover Python 3.x installation process (including pip), but it is required as well.
apt-get update && apt-get install -y pkg-config gammu libgammu-dev libffi-dev
git clone https://github.com/pajikos/sms-gammu-gateway
cd sms-gammu-gateway
pip install -r requirements.txt
You usually need to edit device property in file gammu.config only, e.g.:
[gammu]
device = /dev/ttyUSB1
connection = at
python run.py
In a case of using any GSM supporting AT commands, you can simply run the container:
docker run -d -p 5000:5000 --device=/dev/ttyUSB0:/dev/mobile pajikos/sms-gammu-gateway
version: '3'
services:
sms-gammu-gateway:
container_name: sms-gammu-gateway
restart: always
image: pajikos/sms-gammu-gateway
environment:
- PIN="1234"
ports:
- "5000:5000"
devices:
- /dev/ttyUSB1:/dev/mobile
Pin to unblock SIM card could be set using environment variable PIN, e.g. PIN=1234.
Out of the box, there is needed an HTTP Basic authentication to send any SMS, username and password can be configured in credentials.txt
Using environment variable SSL=True, the program expects RSA private key and certificate to provide content via HTTPS. Expected file paths (you can edit it in run.py or mount your own key/cert in Docker):
/ssl/key.pem
/ssl/cert.pem
Try to check gammu configuration file site
- platform: rest
resource: http://xxx.xxx.xxx.xxx:5000/signal
name: GSM Signal
scan_interval: 30
value_template: '{{ value_json.SignalPercent }}'
unit_of_measurement: '%'
notify:
- name: SMS GW
platform: rest
resource: http://xxx.xxx.xxx.xxx:5000/sms
method: POST_JSON
authentication: basic
username: admin
password: password
target_param_name: number
message_param_name: text
- alias: Alarm Entry Alert - Garage Door
trigger:
platform: state
entity_id: binary_sensor.garage_door
state: 'on'
condition:
- platform: state
entity_id: alarm_control_panel.alarm
state: 'armed_home'
action:
service: notify.sms_gw
data:
message: 'alert, entry detected at garage door'
target: '+xxxxxxxxxxxx'
- platform: rest
resource: http://127.0.0.1:5000/getsms
name: sms
scan_interval: 20
username: admin
password: password
- platform: template
sensors:
sms_parsed:
friendly_name: "sms_text"
value_template: "{% set sms_state = states('sensor.sms')|from_json %}{{sms_state.Date}}"
attribute_templates:
text: >-
{% set sms_state = states('sensor.sms')|from_json %}{{sms_state.Text}}
number: >-
{% set sms_state = states('sensor.sms')|from_json %}{{sms_state.Number}}
state: >-
{% set sms_state = states('sensor.sms')|from_json %}{{sms_state.State}}
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